so goode picture.
very nice ty

Base +5

(18禁ゲームCG) [151225] [デジタルGパワー] 貞操観念逆転学園

Base +6

Getchu - http://www.getchu.com/soft.phtml?id=881690

Erogamescape -http://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=22876

VNDB - https://vndb.org/v18887

DL site - http://www.dlsite.com/pro/work/=/product_id/VJ009767.html/

DiGiket - http://www.digiket.com/work/show/_data/ID=ITM0126866/

Gyutto - http://gyutto.com/i/item160360

Comshop - http://www.comshop.ne.jp/items/item-287281.html

DMM - http://dlsoft.dmm.co.jp//detail/ggs_1010

Melonbooks DL - http://www.melonbooks.com/index.php?main_page=product_info&products_id=IT0000184602

Melonbooks - https://www.melonbooks.co.jp/detail/detail.php?product_id=145282

Toranoana - http://www.toranoana.jp/mailorder/article/04/0030/36/61/040030366184.html

Doujinshi.org - http://www.doujinshi.org/book/866491/

Game OHP - http://digitalgpower.com/product/dgp_pro15.html

Artist - Maccha (まっ茶) (マッチャ)

Base +37, Buraku-chan +10

According to the summary, the MC somehow wonders into a world where our sexual mores are reversed: women are the ones who buy up male idol goods and male gravure photobooks, while men are the ones who are more likely to be victims of sexual assault (committed by women). Many girls ask the MC for sex and he obliges, gaining a reputation as a slut.

I recall reading a CG set with a similar setting, but I can't remember the title or the author.

Base +9, Ooe Kintarou +4, Budda001 +6

nowittycomment - Sounds like Doutei na Joshi-tachi to Boku (https://vndb.org/v7026) by MBS Truth.

Base +6

To nowittycomment: Teisou Gyakuten Sekai is a manga with a similar plot. By similar plot, I mean the mc wonders into a world where the gender sex roles are reversed. He's a high school student and prostitute.

Base +8, Budda001 +6